Year	current US$
1960	0
1961	0
1962	449999.988079071
1963	600000.0089406971
1964	2310000.00238419
1965	589999.992400408
1967	1080000.00752509
1968	259999.99418854702
1969	789999.984204769
1970	3269999.98651445
1971	4229999.96878207
1972	3359999.9919533697
1973	7199999.73848462
1974	19489999.9164045
1975	18189999.8486042
1976	23179999.5303154
1977	25799999.311566398
1978	21940000.4446507
1979	26070000.365376502
1980	33449999.3920326
1981	25080000.1192838
1982	20030000.280588903
1983	18250000.232830603
1984	16199999.989941698
1985	21909999.5251745
1986	31080001.128837503
1987	28760000.163689297
1988	53569999.2328882
1989	77379999.1086125
1990	95560000.1495332
1991	92230000.3916025
1992	143689999.56361902
1993	180809996.629134
1994	239750001.173466
1995	229480001.95063698
1996	277449999.760836
1997	263780000.14647803
1998	176270000.385121
1999	226130001.55054
2000	251199999.861419
2001	229570000.661537
2002	217669999.25673
2003	272850002.003834
2004	364820002.35095596
2005	289830003.131181
2006	622080003.270879
2007	354910002.96175504
2008	383309996.07965404
2009	350389998.884872
2010	333559999.214485
2011	403909994.713962
2012	364909999.31097
2013	359740001.479164
2014	360379998.758435
2015	257299998.46778798
2016	283310002.427548
2017	297850000.99614304
2018	319339998.615906
2019	308720003.226772
2020	343960001.407191
2021	405830000.86434203
2022	316479997.99996614